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❑ 6. Set Recirculation Control Valve (gray), and Recirculation Flow Rate. <br />The recirculation valve should be set according to the table in tank. <br />Normal recirculation flow should be level with the top edge of the recirculation pipe line <br />cut-out spilling into Chamber 1. <br />❑ 7. Check/Set Aeration Balance Control Valve (blue). <br />Recirculation Pipe <br />Indication Line <br />,,-ss Water level should <br />be at top of <br />horizontal edge. <br />The default, normal setting for the Aeration Control Valve is 50%. <br />Visually observe the airflow rates on each side of the plant by checking to see if bubbles <br />are evenly distributed on both sides of Chamber 3, The Aeration Chamber. If there is an <br />obvious discrepancy in airflow between the two sides, adjust the Aeration Balance Control <br />Valve so that the airflow is equal. Important! <br />❑ 8. Check/Set Effluent Airlift Valve (white). <br />The Effluent Control Valve is initially set to it's default setting (as highlighted in black) and there is <br />typically no need for it to be adjusted under standard conditions. <br />M <br />